Definition: You are given a question on a random topic. You are also given 4 answer options (associated with "A", "B", "C", "D"), out of which only one is correct. You need to answer the question by selecting the correct option. You should only answer with the choice letter, not the whole answer.
Input: What US president is mentioned by name in the opening theme song of TV's 'All in the Family'?
(A)Calvin Coolidge (B)Harry Truman (C)Herbert Hoover (D)Richard Nixon

C